The iPhone clip that won't play on a PC usually just needs a new container. MOV to MP4 does exactly that when you drop videos anywhere on this page: the container is swapped losslessly and near-instantly, and it only re-encodes to H.264 if you force it. No upload, no size caps, no signup.
Why iPhone videos won't play on your PC
iPhones record H.264 or HEVC video inside a QuickTime .mov
container. Windows apps, PowerPoint, and many players expect
.mp4. When the video inside is H.264, the fix is a pure
container swap: same pixels, new envelope, done in seconds even for big
files because nothing uploads. Newer iPhones record HEVC (H.265), which
some PCs can't decode at all. That's what the Force H.264
mode is for: a real re-encode into the codec everything on earth plays.
Rewrap vs re-encode
| Instant rewrap | Force H.264 | |
|---|---|---|
| Quality | Identical, bits untouched | Visually equal, new encode |
| Speed | Seconds | Uses your hardware encoder (minutes for long videos) |
| Use when | "File type not supported" | Video opens but shows black / no image (HEVC problem) |
FAQ
Is there a file size limit?
No hard cap. Multi-GB files work best on a computer in Chrome.
Which mode for PowerPoint's "codec unavailable" error?
Try instant rewrap first; if PowerPoint still complains, the video is HEVC. Run it again with Force H.264.
Is my video uploaded?
Never. The rewrap happens instantly and privately, powered by your own hardware. A 2 GB video would take ages to upload anywhere. Skipping the upload IS the speed trick.